Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 250mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ16 mm
- Stroke250 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM6×1.0
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S
With a 40 mm trim window, the MACJ16X250-40S lets maintenance teams set extend travel anywhere between 210 and 250 mm using the built-in stop screw, no shims or new cylinders needed. It is double-acting with a variable cushion at both ends and holds a steady 100.5 N push at 0.5 MPa (140.7 N at 0.7 MPa) across the whole range.
Every unit ships with the piston magnet already fitted, so CMSG / DMSG / EMSG switches mount without a special order. The riveted stainless barrel and hard-chrome 6 mm rod shrug off condensation in damp workshops, and at 0.5 MPa you can count on about 60 N of working force - enough to lift roughly 5 kg vertically.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 250 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 300 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S Is Used
Oven hood lift
Raises a lightweight curing-oven hood 210-250 mm for tray loading, the cushion giving a soft landing that protects the door seal.
Small-part ejection
Kicks finished brass fittings out of a CNC drop chute, the tuned stroke stopping every part at the same catch point.
Position confirmation
The standard magnet drives a DMSG switch so the PLC verifies full extend before the next dial-plate station indexes.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S the Right Cylinder?
Compared with the 20 mm bore (157.0 N push at 0.5 MPa) or the 25 mm bore (245.3 N), this 16 mm bore suits lighter duty. The adjustable stop is a positioning aid, not a mid-stroke lock - on air loss the piston keeps drifting, so use a blocking valve or external clamp where the load must stay put. FA flange and LB foot mounts plus I / Y rod knuckles cover most small-machine fixings; over a 250 mm stroke, support the load to keep side loading off the slim rod.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-40S FAQ
Expect 100.5 N extend and 86.4 N retract at 0.5 MPa, climbing to 140.7 N and 120.9 N at 0.7 MPa; the theoretical peak is 20.5 kgf at 1.0 MPa. Proof pressure is 1.5 MPa (215 psi) and operating range is 0.15-1.0 MPa (22-145 psi).
No. The stop screw sets the extend stroke between 210 and 250 mm but acts as a mechanical end stop only - if air is lost the rod will drift. Pair it with a blocking or pilot-checked valve when the load must stay positioned.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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